Insulator.



C. W. KETTRON.

INSULATOR. APPLICATION FILED APR.4, 1912.

1,127,776. I Patented Feb. 9, 1915.

FIGJ;

WITH/E5555. INVENTOR. Zfl/bwwflomw A TTVS.

CHARLES 'W. KETTEON, 0F MACOMB, ILLINOIS, ASSIGNOR. T6 ZLLINOIS ELECTRIC PORCELAIN COMPANY. OFMAC'OMB, ILLINOIS, A CORPORATION OF ILLINOIS.

rris -Laron.

Application filed April 4, 1912.

To aZZ whom it may concern:

Be it known that 1, Emirates W. Kn'r'rnoiv, a citizen of the United States, residing at Macomb, in the county of McDonough and State of Illinois, have invented certain new and useful Improvements in insulators, of which the following is a specification.

My invention relates to improvements in insulators and particularly to that type of device which is adapted to support and insulate electric conductors, being made in the form of a divided block, the two sections thereof being similar and corresponding in shape, size and conformation so as to be reversible. v

The object of this invention is to provide such a divided insulator in which the sections are formed so as to be of great strength and at the same time be capable of readily interlocking to prevent lengthwise movement of the wire or other conductor.

A; further object of my invention is the provision of such a device in which all sharp angles and corners are dispensed with, and an efiicient locking arrangement provided.

To the accomplishment of the foregoing and such other objects: as may hereinafter appear, my invention consists in the con struction and arrangement of parts and details hereinafter described and then sought to be defined in the appended claims, reference being had to the accompanying drawings forming a part hereof and in which is illustrated a preferred embodiment of my invention, it being understood however, that various changes in the arrangement and details may be made in' practice within the scope of the appended claims without digressing from my inventive idea.

Figure 1 is an end view of one of the sections. Fig. 2 is a side elevation of one of the sections. Fig. 3 is a bottom plan view of one of the sections. Fig. i is a top plan view of one of the sections. Fig. 5 is a vertical cross section of an assembled block, a

securing means being shown. Fig. 6 is a side view of two sections assembled in the form of a block. Y

My invention contemplates broadly the provision of a two part or divided insulator, the sections of which are similar and corresponding in shape, size and conformation, each section being substantially L shaped and having a lower table or supporting sur- Specification or" Letters Patent.

Patented 9, 1%15.

Serial No. ceases.

of substantially the same curvatureas the tables themselves. interposed between the horizontal and vertical walls orportions of each section at the juncture is the shoulder or abutment which has its front face or wall convexed and extending down to the lower table or bearing surface. The vertical wall of each section which extends upward from the rear of said shoulder or abutment is concaved to correspond to the convex face of said shoulder or abutment, these walls or faces being the vertical meeting walls or faces. This shoulder or abutment extends entirely across eachsection and it is through this that the hole or opening passes which is designed to receive the fastening means for.

the insulator. These sections are preferably of porcelain and as stated before are the same so that a pair placed in opposed relation constitute a block and either one may be used as the upper or lower member and vice versa.

Referring now to the drawings, the numeral 1 designates the sections which are preferably L shaped, having the horizontal portions 2 and the vertical portions 3. The upper or inner surface of the horizontal portion is formed concave. as indicated at a, and this portion has the groove 5 formed therein, which is also concave. The top of the vertical portion is convexed as indicated at 6, and has the convex groove 7. Each of these grooves has formed therein the gripping ribs or projections 8.

It is to be understood that the convex portions 6'correspond to the concave portions 4, so that when two of the sections are positioned one on the other in opposed relation, these portions will fit and engage each abutment, sotliat when two of these sections entirely across each section. The opening 11 passes centrally through the device and through the stud or extension formed by the abutment, so that when the two sections are assembled the. hole through the block will be continuous.

When two of these sections are positioned opposite each other and in engagement a substantially square block is formed having curved wire Ways or gripping grooves there in, which are formed by the corresponding shapedgrooves 5 and 7 of the opposed sections. Also the convex portion 6 of one section bearing inthe concave portion 4 of the other section will provide an interlocking arrangement and at the same time permit of an adjustment of the sections relative to each other. It is for this same purpose that the front wall of the shoulder or abutment is formed convex so as to fit the concave wall of the vertical portion. This construction also prevents the sections from moving lengthwise of the wire. Further than that by having the enlarged shoulder or abutment forming the stud or projection at the meeting angle between the horizontal and vertical portions, each section is strengthened at its weakest place. This will do away with a large amount of breakage in devices of this character and at the same time will not render them unduly cumbersome,-nor will any sharp angles or corners which may readily be broken, be provided.

The device is simple and compact and permits ready adjustment, the sections at the same time having a secure interlocking arbeing concave and the other convex, and one of the horizontal meeting faces being concave and the other convex, said horizontal meeting faces having grooves formed therein to provide wire ways.

2. In a device of the character described, a section comprising a horizontal and a vertical portion, an abutment formed at the junction of said portions and extending entirely across said section and having a convex front face, said vertical portion having a concave face above said abutment extending entirely across said section. V,

3. An insulator of the character described, comprising duplicate and substantially L. shaped sections adapted to be positioned in opposed relation to each other, each section having a horizontal and a vertical portion and an abutment formed at the junction of saidportions and extending entirely across said section, said abutment having a convex front face and said vertical portion hav ing a correspondingly concaved front face above said abutment, the top face of said horizontal portion being concaved and grooved and the top face of said vertical portion being correspondingly convexed and grooved so as to form wire ways.

In testimony whereof I affix my signature,

of two witnesses.

CHARLES l KETTRON.

Witnesses:

WILLARD G. SU'rroN, Gno. H. Sco'rr.

in presence 

